FIELD: construction industry.
SUBSTANCE: coating waterproof compound used for protecting concrete surface consists of the following, wt %: portland cement - 65.0-73.0, quartz sand with specific surface area of 3500-4500 cm2/g - 12.0-20.0, sodium silicate in the form of silicate block with specific surface area of 4000-5000 cm2/g - 7.0-14.6, superplasticising agent C-3 - 0.5-0.9, and calcium nitrate - 2.0-3.5.
EFFECT: improving waterproofness.
1 tbl
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